Gmail just rolled out, via preview themes, their new, minimal look. Keeping in line with the update to Google Calendar, the new interface brings a lighter and cleaner look to your Gmail inbox. It's not the default just yet, so to turn it on:

Click one of the Preview theme links (bottom right of the themes for me); one is called Preview, the other Preview (Dense)

That's all

Gmail's the preferred email client of most of Lifehacker's readership, so a redesign of this magnitude is pretty significant. Give it a try on your account and let's hear how you like it in the comments.